Comments on: SQL SERVER – Difference Between ROLLBACK IMMEDIATE and WITH NO_WAIT during ALTER DATABASE http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/ Personal Notes of Pinal Dave Mon, 13 Feb 2012 15:11:24 +0000 hourly 1 http://wordpress.com/ By: SQL SERVER – Interview Questions and Answers – Frequently Asked Questions – Day 19 of 31 Journey to SQLAuthority http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-149238 Tue, 19 Jul 2011 01:30:31 +0000 http://blog.sqlauthority.com/?p=8233#comment-149238 [...] Specifies that if the requested database state or option change cannot complete immediately without waiting for transactions to commit or roll back on their own, then the request will fail.(Read more here) [...]

]]> By: ramakrishna http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-118777 Wed, 16 Feb 2011 04:58:57 +0000 http://blog.sqlauthority.com/?p=8233#comment-118777 hi pinaldave sir,
At wich situation we use this statements
ROLLBACK IMMEDIATE and WITH NO_WAIT during ALTER DATABASE
mY mailid [email removed]
am waiting for ur reply
Thanks and regards
Ramakrishna

]]> By: pinaldave http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-78480 Thu, 01 Jul 2010 19:38:45 +0000 http://blog.sqlauthority.com/?p=8233#comment-78480 Hello Vinod Sir,

This is great observation and I am fortunate that you are here to help me clear this doubt further.

Yes, 1 and 3 are same but in case of the 1st, it will wait for the transactions to complete. Many time, it waits for long time and times out. In case of 3, if Alter is not executed right away, it fails immediately.

Kind Regards,
Pinal

]]> By: Vinod http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-78450 Thu, 01 Jul 2010 13:37:37 +0000 http://blog.sqlauthority.com/?p=8233#comment-78450 Books online says –

NO_WAIT

Specifies that if the requested database state or option change cannot complete immediately without waiting for transactions to commit or roll back on their own, the request will fail.

Pinal did you mean to say this ?

1. If you dont specify any option – Alter database will wait for transactions to complete and then execute

2. If you specify rollback- alter database, will rollback all transaction immediately and then effect the alter database changes

3. If you specify NO_WAIT, dont wait for transaction to complete, try executing my alter db statement, and let the alter fail for its specified exception. This wouldnt have been the case for the 1. one. it would have waited for the transact to complete and then the alter could succeed or fail based on the context of alter.

]]> By: pinaldave http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-63202 Thu, 18 Mar 2010 20:15:29 +0000 http://blog.sqlauthority.com/?p=8233#comment-63202 Hello Jerry,

Welcome back.

I usually give some time for trans to rollback. So I usually use with rollback with sometime delay of 30 seconds.

Kind Regards,
Pinal

]]> By: Jerry Hung http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-63200 Thu, 18 Mar 2010 20:03:15 +0000 http://blog.sqlauthority.com/?p=8233#comment-63200 Nice to be back here commenting

so Pinal, what’s your recommendation method?

I almost always use WITH ROLLBACK IMMEDIATE since I don’t want to wait for others :)

NO WAIT makes me wait on others by failing ;)

]]> By: Ramdas http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-63103 Wed, 17 Mar 2010 15:08:46 +0000 http://blog.sqlauthority.com/?p=8233#comment-63103 Thank you pinal for the clarification.

]]> By: pinaldave http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-63097 Wed, 17 Mar 2010 13:47:59 +0000 http://blog.sqlauthority.com/?p=8233#comment-63097 Hi Ramdas,

That is my understanding. If the transactions are not complete by the time No_wait is executed they error out.

]]> By: Ramdas http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-63090 Wed, 17 Mar 2010 13:18:55 +0000 http://blog.sqlauthority.com/?p=8233#comment-63090 Hi Pinal,
Just to get this clear, in case of the NO_WAIT option, if there are incomple transactions in the database, then the NO_WAIT will error out?

Thank you

]]> By: pinaldave http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-63033 Wed, 17 Mar 2010 03:19:03 +0000 http://blog.sqlauthority.com/?p=8233#comment-63033 Thanks for note, Yes, Images needed to switch.

Now the images are corrected.

]]> By: johnjakubowski http://blog.sqlauthority.com/2010/03/17/sql-server-difference-between-rollback-immediate-and-with-no_wait-during-alter-database/#comment-63032 Wed, 17 Mar 2010 03:02:34 +0000 http://blog.sqlauthority.com/?p=8233#comment-63032 It looks like those images should be switched.

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